Improvements in or relating to electric voltage indicators,申请号GB19300004230-传众专利搜索

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发明名称	Improvements in or relating to electric voltage indicators
摘要
申请公布号	GB344175(A)	申请公布日期	1931.03.05
申请号	GB19300004230	申请日期	1930.02.07
申请人	N.V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	G01R19/155	主分类号	G01R19/155
代理机构		代理人
主权项
地址

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